2019015640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{8999}}^1$

素因数の和:9160

約数の個数: 64

約数和(自身を含む): 4665600000

約数和(自身を除く): 2646584360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 79, 142, 158, 284, 316, 355, 395, 568, 632, 710, 790, 1420, 1580, 2840, 3160, 5609, 8999, 11218, 17998, 22436, 28045, 35996, 44872, 44995, 56090, 71992, 89990, 112180, 179980, 224360, 359960, 638929, 710921, 1277858, 1421842, 2555716, 2843684, 3194645, 3554605, 5111432, 5687368, 6389290, 7109210, 12778580, 14218420, 25557160, 28436840, 50475391, 100950782, 201901564, 252376955, 403803128, 504753910, 1009507820, 2019015640]

約数ペア:

[(1, 2019015640), (2, 1009507820), (4, 504753910), (5, 403803128), (8, 252376955), (10, 201901564), (20, 100950782), (40, 50475391), (71, 28436840), (79, 25557160), (142, 14218420), (158, 12778580), (284, 7109210), (316, 6389290), (355, 5687368), (395, 5111432), (568, 3554605), (632, 3194645), (710, 2843684), (790, 2555716), (1420, 1421842), (1580, 1277858), (2840, 710921), (3160, 638929), (5609, 359960), (8999, 224360), (11218, 179980), (17998, 112180), (22436, 89990), (28045, 71992), (35996, 56090), (44872, 44995)]